Copyright © Yongcheng Zhan, Zhu Zhang, Janet M Okamoto, Daniel D Zeng, Scott J Leischow. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 24.08.2019. This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/).
Except where otherwise noted, this item's license is described as Copyright © Yongcheng Zhan, Zhu Zhang, Janet M Okamoto, Daniel D Zeng, Scott J Leischow. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 24.08.2019. This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/).